Identification of a Nonlinear System by Determining of Fuzzy Rules

In this article the hybrid optimization algorithm of differential evolution and particle swarm is introduced for designing the fuzzy rule base of a fuzzy controller. For a specific number of rules, a hybrid algorithm for optimizing allopen parameters was used to reach maximum accuracy in training. The considered hybrid computational approach includes: opposition-based differential evolution algorithm and particle swarm optimization algorithm. To train a fuzzysystem hich is employed for identification of a nonlinear system, the results show that the proposed hybrid algorithm approach demonstrates a better identification accuracy compared to other educational approaches in identification of thenonlinear system model. The example used in this article is the Mackey-Glass Chaotic System on which the proposed method is finally applied.

Keywords:

System Identification , Combined Training , Fuzzy Rules , Database Design